JP7520378B2 - Rail Assembly - Google Patents

Description

The present invention relates to a rail assembly that is laid on a construction surface such as a concrete pouring surface and allows construction vehicles such as self-propelled robots to travel on it.

The applicants have previously proposed a self-propelled robot for tying rebars (see Patent Document 1) that travels over a number of rebars laid in a lattice pattern on a concrete construction surface.
Meanwhile, independently of the above-mentioned self-propelled robot, a truss reinforcing bar having a truss structure in which the reinforcing bar is repeatedly folded back between the upper and lower chord members has been known as a reinforcing bar to be placed on a concrete construction surface (Patent Document 2).

Patent No. 6633720 Special Publication No. 61-38307

The self-propelled robot for tying rebars described in Patent Document 1 ties the intersections of rebars while traveling over rebars arranged in a grid pattern on the concrete pouring surface that serves as the construction surface. When the robot or construction materials are brought to the construction site, they may be transported by being suspended by a crane. However, if a roof has already been installed above the construction site, there is a problem that the crane ropes interfere with the roof, making it impossible to lower the robot or construction materials to the desired position on the construction site.

On the other hand, when truss reinforcing bars as disclosed in Patent Document 2 are installed at a construction site, if an attempt is made to have a self-propelled robot for binding reinforcing bars run over the truss reinforcing bars, the folded-back parts at the top ends of the reinforcing bars of the truss reinforcing bars collide with the wheels of the self-propelled robot for binding reinforcing bars, becoming an obstacle, and the self-propelled robot for binding reinforcing bars cannot run over the truss reinforcing bars properly.

The present invention solves the problems of the prior art as described above. In other words, the object of the present invention is to provide a rail assembly that can be temporarily installed at a construction site to maintain a specified rail spacing, ensure the running track of a reinforcing bar work vehicle, prevent the construction vehicle from coming off the tracks while traveling, ensure a stable running track, and prevent unexpected accidents such as collisions with workers on the rail laying surface.

The invention according to claim 1 is a rail assembly that is composed of at least a number of unit rail members and a number of rail width retaining members that connect the unit rail members together in a state where they are arranged in parallel with a specified rail arrangement interval, and that runs a construction vehicle along the unit rail members as a running track, and the unit rail members are composed of a pair of left and right lower end bars arranged on the rail laying surface, one upper end bar that is installed parallel to and spaced apart above the lower end bars, and reinforcing bars that connect the lower end bar and the upper end bar to form a truss structure, and the running steel rail on which the construction vehicle runs is arranged integrally along the upper end bar of the unit rail members, thereby solving the above-mentioned problem.

The invention of claim 2 further solves the above-mentioned problem in that, in addition to the configuration of the invention of claim 1, the rail laying surface is a concrete pouring construction surface, and the rail arrangement spacing and rail arrangement height of the running reinforcing steel rail are set to dimensions corresponding to the reinforcing steel arrangement spacing and reinforcing steel arrangement height of the running reinforcing steel on the concrete pouring construction surface, respectively.

The invention according to claim 3 further solves the above-mentioned problem by, in addition to the configuration of the invention according to claim 1 or claim 2, the unit rail member, the rail width retaining member, and the running reinforced concrete rail being made of reinforcing bars used in pouring concrete.

According to the rail assembly of the invention of claim 1 of the present invention, the rail assembly is composed of at least a plurality of unit rail members and a plurality of rail width retaining members that connect the unit rail members together while arranging them in parallel at a predetermined rail arrangement interval. This allows the rail assembly to form the running track of the construction vehicle, and the movable area of the construction vehicle is clearly defined on the rail laying surface, preventing unexpected accidents such as collisions with workers on the rail laying surface.

In addition, the unit rail member is composed of a pair of lower end bars on the left and right sides placed on the rail installation surface, one upper end bar placed parallel to and spaced apart above the lower end bars, and reinforcing bars that connect the lower end bar and the upper end bar to form a truss structure. The truss structure formed between the lower end bar and the upper end bar of the unit rail member reliably supports the running load generated when the reinforced concrete construction vehicle runs, so the unit rail member does not bend even if the rail installation surface is slightly uneven, which is called unevenness. As a result, the construction vehicle can be prevented from running off the tracks while it is running, ensuring a stable running track.

Furthermore, by providing a plurality of rail width retaining members that connect the unit rail components together while arranging them in parallel at a predetermined rail spacing, the unit rail components are securely fixed together at the predetermined rail spacing in advance, so that a running track that maintains the specified rail spacing can be secured simply by temporarily installing the rail assembly on the rail installation surface.

According to the rail assembly of the invention of claim 2 of the present invention, in addition to the effects of the invention of claim 1, the rail installation surface is a concrete pouring surface, and the rail arrangement interval and rail arrangement height of the running rebar rail are set to dimensions corresponding to the rebar arrangement interval and rebar arrangement height of the running rebar on the concrete pouring surface, respectively, so that the rail assembly and the running rebar are smoothly connected in a flush state without any steps. Therefore, when a construction running vehicle such as a self-propelled robot for binding rebars transports a heavy load outside the concrete pouring surface at a concrete pouring site and runs on the rail assembly, and then transfers to a running rebar arranged on the concrete pouring surface, when transferring between the rail assembly and the running rebar, the running rebar can be transferred stably without applying an impact load to the running rebar, and deterioration and deformation of the rebar as a structural material can be prevented.

According to the rail assembly of the invention of claim 3 of the present invention, in addition to the effects of the invention of claim 1 or claim 2, the unit rail members, rail width retaining members, and running reinforced rail are made of reinforcing bars used in pouring concrete, so the rail assembly itself can be used as a concrete reinforcing member after pouring the concrete. This eliminates the need for removal work to remove the rail assembly from the concrete pouring site after pouring the concrete, significantly shortening the construction period for pouring the concrete and significantly reducing the construction burden.

1 is a schematic diagram showing a self-propelled robot as a reinforcing bar work vehicle that travels on the rail assembly of the present invention, traveling over reinforcing bars arranged in a lattice pattern. FIG. 1 is a schematic perspective view showing a rail assembly according to a first embodiment of the present invention; 1A to 1C are schematic assembly diagrams showing a rail assembly assembly method according to a first embodiment of the present invention. 1 is a schematic cross-sectional view showing a rail assembly according to a first embodiment of the present invention disposed on a rail-laying surface, as viewed from the longitudinal direction; 1 is a schematic diagram showing a self-propelled robot as a reinforcing bar work traveling body traveling on the rail assembly in the first embodiment of the present invention transferring onto a traveling reinforcing bar arranged on a concrete pouring construction surface. FIG. 11 is a schematic diagram showing a construction material freight car as a reinforcing bar work vehicle mounted on a rail assembly according to a second embodiment of the present invention;

The rail assembly of the present invention is composed of at least a number of unit rail members and a number of rail width retaining members that connect the unit rail members together in a state in which they are arranged in parallel at a predetermined rail arrangement interval, and as long as it can prevent unexpected accidents such as collisions with workers on the rail installation surface, the specific embodiment may be any one.

The rail assembly of the present invention is also not limited to any specific embodiment, so long as the unit rail members are composed of a pair of lower end bars on the left and right side of the rail installation surface, one upper end bar installed parallel to and spaced apart above the lower end bars, and a reinforcing bar connecting the lower end bar and the upper end bar to form a truss structure, so that even if the rail installation surface at the concrete pouring site is somewhat uneven, the unit rail members will not bend, and as a result, the construction vehicle can be prevented from running off the tracks while traveling and a stable running track can be ensured.

Furthermore, the rail assembly of the present invention is provided with a plurality of rail width retaining members that connect the unit rail members together while arranging them in parallel at a predetermined rail spacing, so that the specific embodiment can be any one as long as a running track that maintains the predetermined rail spacing can be secured simply by temporarily installing the rail assembly on the rail installation surface.

For example, a unit rail component can be constructed by connecting two bottom end bars and one top end bar with two continuous reinforcing bars on the left and right to form a truss structure, and then welding these reinforcing bars together. However, if commercially available so-called truss reinforcing bars are repurposed and used, the rail assembly can be assembled quickly. The top end bar can be constructed of round steel or deformed steel bars or other steel bars.

In addition, commercially available bamboo joint rebar can be used as the running rebar rail, but other shapes of commercially available rebar or rack rails (toothed rails) or other components with multiple protrusions aligned along the length of the rail at least on their upper surface can be used as long as they can prevent the drive wheel units from slipping on the running rebar rail and assist the self-propelled robot's climbing and braking operations when the self-propelled robot as a construction vehicle transports heavy objects loaded onto building material freight cars or when the self-propelled robot as a construction vehicle travels on an incline.

When multiple unit rail components are arranged in parallel at a specified rail spacing and connected together with multiple rail width retaining members, they can be tied together using rebar tie wires used to tie structural rebar, which makes it easy to adjust the rail spacing and disassemble the rail assembly when removing it. However, if there is no need to adjust the rail spacing or disassemble and remove the rail assembly, the unit rail components and rail width retaining members can be fixed together by welding.

The rail assembly of the present invention can be installed on the ground at a construction site, the floor of a building, or any other surface on which a construction vehicle will run, as the rail installation surface. In addition, the rail assembly can be temporarily installed on a construction surface on which it is undesirable for the condition of the construction vehicle to change due to random running of the construction vehicle, such as the top surface of reinforcing bars temporarily installed in a grid pattern, as the rail installation surface.

The construction vehicle according to the present invention can be any type of self-propelled robot that has driving force for traveling, and in particular can be a self-propelled robot for binding rebars. In this case, it is not limited to a single drive wheel unit that runs on a single rebar as a rail for driving and traveling, but multiple drive wheel units may each use two or more rebars as rails for driving and traveling.

The construction vehicle according to the present invention may also be a construction material freight car that does not have a driving force for traveling. Furthermore, it is not limited to a pair of left and right driven wheel units that run on reinforcing bars as rails for driven traveling, but may have three or more sets of driven wheel units.

Therefore, the rail assembly of the present invention may be configured with three or more unit rail members arranged in parallel as necessary.

The rail assembly according to the first embodiment of the present invention will be described with reference to Figs. 1 to 5. Fig. 1 is a schematic diagram showing how a self-propelled robot as a reinforcing bar work vehicle traveling on the rail assembly of the present invention travels on reinforcing bars arranged in a grid pattern, Fig. 2 is a schematic perspective view showing the rail assembly according to the first embodiment of the present invention, Fig. 3 is a schematic assembly diagram showing a method of assembling the rail assembly according to the first embodiment of the present invention, Fig. 4 is a schematic cross-sectional view showing the state in which the rail assembly according to the first embodiment of the present invention is arranged on a rail laying surface as viewed from the longitudinal direction, and Fig. 5 is a schematic diagram showing how a self-propelled robot as a reinforcing bar work vehicle traveling on the rail assembly according to the first embodiment of the present invention transfers onto a traveling reinforcing bar arranged on a concrete pouring surface.

First, referring to FIG. 1, we will explain how the self-propelled robot R, which serves as a rebar work vehicle that travels on the rail assembly of the present invention, travels on rebars arranged in a grid pattern. The self-propelled robot R in this embodiment has a rebar binding function.

The self-propelled robot R that travels on the rail assembly of the present invention has at least a driving wheel unit Wd that travels on any one of the upper running rebars LR among multiple rebars arranged in a grid pattern on the concrete pouring construction surface as the construction surface, a pair of left and right driven wheel units Wu that are arranged in parallel on both the left and right sides of the driving wheel unit Wd and run on the running rebars LR arranged in parallel adjacent to the rails for driving travel as rails for driven travel, and a frame unit Fu that mounts the driving wheel unit Wd and the pair of left and right driven wheel units Wu, which are integrally connected.

The pair of left and right driven wheel units Wu each consists of a front wheel Wf and a rear wheel Wr that follow the same track.

The self-propelled robot R is equipped with a rebar binding machine TM that is detachably attached between the front wheels Wf and rear wheels Wr, and can bind the intersections of the running rebars LR and the perpendicular rebars TR while traveling over the running rebars LR.

Next, one embodiment of the rail assembly 100 of the present invention will be described with reference to Figures 2 to 5.

As shown in Figures 2 and 4, the rail assembly 100 of this embodiment is composed of three unit rail members 110, a number of rail width retaining members 120 that connect the unit rail members 110 together in a state in which they are arranged in parallel at a predetermined rail arrangement interval W, a running reinforcing bar rail 130, and a reinforcing bar binding wire 140.

The unit rail member 110 is constructed by fixing together a pair of left and right lower end bars 112 arranged on the rail installation surface, a single upper end bar 111 arranged parallel to and spaced apart above the lower end bars 112, and reinforcing bars 113 that connect the lower end bars 112 and the upper end bars 111 to form a truss structure.

The rail width retaining members 120 are arranged in multiple locations on one rail assembly 100, and are connected together perpendicular to the three unit rail members 110 in a state in which the three unit rail members 110 are arranged in parallel at a predetermined rail arrangement interval W.

The running reinforcing steel rail 130 is fixed integrally and placed on top of the upper end reinforcement 111 of the unit rail member 110 to allow the self-running robot R to run.

The rebar tie wire 140 fastens the three unit rail members 110 to the multiple rail width retaining members 120.

Next, the procedure for assembling the rail assembly 100 of this embodiment will be described.

First, when assembling the unit rail member 110, a pair of left and right lower end bars 112 and one upper end bar 111 are placed at a distance above the lower end bars 112, and the folded portion 113a of the reinforcing bar 113, which has a repeated folded structure, is aligned along the sides of the lower end bars 112 and upper end bars 111, and the areas where the sides of the lower end bars 112 and upper end bars 111 and the reinforcing bar 113 are in contact are welded to fix them together.

Next, the running reinforcing bar rail 130 is placed on top of the upper end bar 111 of the unit rail member 110, and the upper end bar 111 and the running reinforcing bar rail 130 are welded together to fix them to each other.

Then, the three unit rail members 110, each of which has a running reinforcing bar rail 130 fixed integrally thereto, are arranged in parallel at a predetermined rail arrangement interval W, and these three unit rail members 110 are bound and fixed to each other by reinforcing bar binding wires 140 and multiple rail width retaining members 120 arranged perpendicular to the longitudinal direction of the unit rail members 110.

At this time, the running reinforcing bar rail 130, which is fixed integrally along the upper end bar 111 and placed on top of it, is held at a predetermined rail arrangement spacing W and a predetermined rail arrangement height H by the rail width holding member 120, and is fixed to each other.

Next, with reference to Figures 1 and 5, a method for running the self-running robot R using the unit rail member 110 of the rail assembly 100 of this embodiment as a running track will be described.

The self-propelled robot R can run on multiple running rebars LR arranged in parallel on the concrete pouring surface CP with the rebar spacing w maintained, using them as rails for driving and driven running. Two driving wheel units Wd on the same track are mounted side by side in the front and rear of the center of the frame unit Fu, and a pair of driven wheel units Wu are mounted on the frame unit Fu on both the left and right sides of these two front and rear driving wheel units Wd, maintaining a spacing of w between the driving wheel units Wd.

Therefore, if the rail arrangement interval W, at which the three unit rail members 110 of the rail assembly 100 are arranged in parallel, is set to the same dimension as the rebar arrangement interval w, the self-propelled robot R can be made to run on the rail assembly 100 without making any special adjustments to the spacing between the left and right wheels by simply placing the drive wheel unit Wd and a pair of driven wheel units Wu of the self-propelled robot R on the traveling rebar rails 130, which are fixed integrally with the unit rail members 110 and placed on top of them.

Furthermore, as shown in FIG. 5, the self-propelled robot R can run on multiple running rebars LR arranged on the concrete pouring surface CP using spacers S to maintain the rebar arrangement height h, using them as rails for driving and running, and if the rail arrangement height H is set to the same dimension as the rebar arrangement height h, when the self-propelled robot R transports a heavy load and runs on the rail assembly 100, and then transfers to the running rebar LR arranged on the concrete pouring surface CP, it can transfer stably between the rail assembly 100 and the running rebar LR without applying an impact load to the running rebar LR.

In addition, if a sleeve-shaped rail connection member J is placed at the connection between the rail assembly 100 and the running rebar LR, or at the connection when multiple rail assemblies 100 are connected in a line in the longitudinal direction, and the rail or rebar to be connected is inserted from both sides, the rail connection member J can cover the gap at the connection, preventing the self-propelled robot R from coming off the tracks.

As described above, the rail assembly 100 of this embodiment is composed of at least a number of unit rail members 110 that are laid and used when pouring concrete, and a number of rail width retaining members 120 that connect the unit rail members 110 together in a state of being arranged in parallel at a predetermined rail arrangement interval W. Therefore, the rail assembly 100 forms a running track for the self-propelled robot R, and the movable area of the self-propelled robot R is clearly defined at the concrete pouring site, thereby preventing unexpected accidents such as collisions with workers at the concrete pouring site.

In addition, the unit rail member 110 is composed of a pair of lower end bars 112 on the left and right sides placed on the rail installation surface, one upper end bar 111 placed parallel to and spaced apart above the lower end bar 112, and reinforcing bars 113 that connect the lower end bar 112 and the upper end bar 111 to form a truss structure.The truss structure formed between the lower end bar 112 and the upper end bar 111 of the unit rail member 110 reliably supports the running load generated when the self-propelled robot R runs, so the unit rail member 110 does not bend even if the rail installation surface at the concrete pouring site is slightly uneven, which is called unevenness.As a result, when the self-propelled robot R runs by itself or when the self-propelled robot R runs while towing a freight car carrying luggage, it is possible to prevent the self-propelled robot R from running off the tracks and ensure a stable running track.

Furthermore, by providing a plurality of rail width retaining members 120 that connect the unit rail members 110 together while arranging them in parallel at a predetermined rail arrangement spacing W, the unit rail members 110 are securely fixed together at the predetermined rail arrangement spacing W in advance, so that a running track that maintains the predetermined rail arrangement spacing W can be secured simply by temporarily setting up the rail assembly 100 at the concrete pouring site.

In addition, the self-propelled robot R is composed of a driving wheel unit Wd that runs on any one of the running rebars LR arranged on the upper side of the multiple rebars arranged in a grid pattern on the concrete pouring surface CP, a pair of left and right driven wheel units Wu that run on the running rebars LR arranged in parallel on both the left and right sides of the driving wheel unit Wd and adjacent to the rails for driving, and a frame unit Fu that connects the driving wheel unit Wd and the pair of left and right driven wheel units Wu together and mounts them. In addition, three sets of unit rail members 110 are arranged in parallel on the rail laying surface facing the driving wheel unit Wd and the pair of left and right driven wheel units Wu of the self-propelled robot R, and the two unit rail members 110 arranged on the outside are used as rails on which the pair of left and right driven wheel units Wu run, and the unit rail member 110 arranged on the inside is used as a rail on which the driving wheel unit Wd runs, which distributes the driving force in a balanced manner to the left and right, ensuring stable running.

Furthermore, since the traveling reinforced concrete rail 130 has numerous nodular convexities 130a aligned in the longitudinal direction of the rail of the traveling reinforced concrete rail 130, the nodular convexities 130a act as anti-slip surfaces when the self-propelled robot R is traveling, preventing the drive wheel unit Wd from slipping against the traveling reinforced concrete rail 130 when the self-propelled robot R is transporting a heavy object or traveling on an inclined section, and assisting the self-propelled robot R in its climbing and braking operations.

The rail spacing W and rail height H of the running rebar rail 130 are set to dimensions corresponding to the rebar spacing w and rebar height h of the running rebar LR arranged on the concrete pouring surface CP, respectively, so that the rail assembly 100 and the running rebar LR are smoothly connected flush with no steps. Therefore, when a self-propelled robot R with a rebar binding function transports a heavy object outside the concrete pouring surface CP at a concrete pouring site and travels on the rail assembly, and then transfers to the running rebar LR arranged on the concrete pouring surface CP, when transferring between the rail assembly 100 and the running rebar LR, the transfer is stable without applying an impact load to the running rebar LR, and deterioration or deformation of the running rebar LR and the straight rebar TR as structural materials can be prevented.

In addition, because the unit rail member 110, rail width retaining member 120, and running reinforcement rail 130 are made of rebar used for pouring concrete, the rail assembly 100 itself can be used as a concrete reinforcing member after the concrete is poured, eliminating the need to remove the rail assembly 100 from the concrete pouring site after the concrete is poured. This significantly shortens the construction time for pouring concrete and significantly reduces the construction burden.

A rail assembly according to a second embodiment of the present invention will be described with reference to Fig. 6. Fig. 6 is a schematic diagram showing a state in which a construction material freight car serving as a traveling body for reinforcing bar work is mounted on the rail assembly according to the second embodiment of the present invention.
The numbers of the components in this embodiment are expressed by replacing the numbers in the 100s given to the corresponding components in the first embodiment with numbers in the 200s.

The construction material freight car C, which serves as a reinforcing bar work vehicle running on the rail assembly 200 of the present invention, does not have a driving force source for driving, but runs by human power applied from the outside or by being pulled by the self-propelled robot R.

The construction material freight car C has at least a pair of left and right driven wheel units Wuc that run on the two upper running rebars LR, which act as rails for running, out of the multiple rebars arranged in a grid pattern on the concrete pouring surface, and a frame unit Fuc on which the pair of left and right driven wheel units Wuc are connected together and mounted.

The pair of left and right driven wheel units Wuc each consists of a front wheel Wfc and a rear wheel Wrc that follow the same track.

The rail assembly 200 of this embodiment is configured in the same manner as the rail assembly 100 of the first embodiment, except that there are two unit rail members 210 and two running reinforcement rails 230, and that the unit rail members 210 and the rail width retaining members 220 are fixed to each other by welding.

As explained above, the construction material freight car C is a running body for rebar work, and is composed of a pair of left and right driven wheel units that run on any two of the upper rebars of multiple rebars arranged in a grid pattern on the concrete pouring surface as running rails, and a frame unit Fuc that connects the pair of left and right driven wheel units Wuc together and mounts them. At least two sets of unit rail members 210 are arranged in parallel on the rail laying surface facing the pair of left and right driven wheel units Wuc of the construction material freight car C, and by using the two unit rail members 210 as rails on which the pair of left and right driven wheel units Wuc run, the weight of the construction materials is distributed in a balanced manner to the left and right, ensuring stable transport and running.

The rail assembly 100 for simultaneously running a self-propelled robot R and a construction material freight car C towed by the self-propelled robot R as a reinforcing bar work vehicle is described below as a third embodiment with reference to Figures 1 to 5.

When a self-propelled robot R and a freight car C for building materials towed by the self-propelled robot R are simultaneously run as a running body for rebar work, the self-propelled robot R can be configured with a driving wheel unit Wd that runs on any one of a number of rebars arranged on the construction surface as a rail for driving running, a pair of left and right driven wheel units Wu that are arranged in parallel on both the left and right sides of the driving wheel unit Wd and run on rebars arranged in parallel adjacent to the rail for driving running as rails for driven running, and a frame unit Fu on which the driving wheel unit Wd and the pair of left and right driven wheel units Wu are integrally connected and mounted.

The construction material freight car C can also be constructed from a pair of left and right driven wheel units Wuc that run on any two of a number of reinforcing bars arranged on the construction surface as rails for running, and a frame unit Fuc on which the pair of left and right driven wheel units Wuc are integrally connected and mounted.

The unit rail members 110 can be arranged in three sets in parallel on the rail laying surface, facing the driving wheel unit Wd of the self-propelled robot R, a pair of left and right driven wheel units Wu of the self-propelled robot, and a pair of left and right driven wheel units Wuc of the construction material freight car C.

By arranging in this way, the drive wheel unit Wd of the self-propelled robot R runs on the unit rail member 110 arranged on the inside, and the two unit rail members 110 arranged on the outside are used as rails on which the driven wheel unit Wu of the self-propelled robot R and the pair of left and right driven wheel units Wuc of the construction material freight car C run in common.

By arranging three sets in parallel on the rail-laying surface facing the driving wheel unit Wd of the self-propelled robot R, the pair of left and right driven wheel units Wu of the self-propelled robot, and the pair of left and right driven wheel units Wuc of the construction material freight car C, the driving force of the self-propelled robot R is distributed in a balanced manner to the left and right, ensuring stable driving, and by using the two unit rail members 110 arranged on the outside as rails on which the pair of left and right driven wheel units Wuc of the construction material freight car C run, the weight of the construction materials is distributed in a balanced manner to the left and right, ensuring stable transport driving.

100, 200... Rail assembly 110, 210... Unit rail member 111, 211... Upper end bar 112, 212... Lower end bar 113, 213... Reinforcement bar 113a, 213a... Reinforcement bar folded back portion 120, 220... Rail width retaining member 130, 230... Traveling reinforcement rail 130a, 230a... Nodular convex portion 140, 240... Reinforcement bar binding wire J... Rail connection member CP... Concrete pouring construction surface (construction surface)
LR: Running rebar TR: Orthogonal rebar R: Self-propelled robot (construction vehicle)
C. Construction material freight car (construction vehicle)
Wf, Wfc...Front wheels Wr, Wrc...Rear wheels Wu, Wuc...Driven wheel units Wd, Wdc...Driving wheel units Fu, Fuc...Frame unit TM...Rebar binding machine S...Spacer H...Rail arrangement height W...Rail arrangement spacing h...Rebar arrangement height w...Rebar arrangement spacing

Claims (3)

A rail assembly including at least a plurality of unit rail members and a plurality of rail width retaining members that connect the unit rail members together in a state in which the unit rail members are arranged in parallel at a predetermined rail arrangement interval, the unit rail members being used as a running track for a construction vehicle to run on,
The unit rail member is composed of a pair of lower end bars arranged on the rail installation surface, one upper end bar arranged in parallel and spaced apart above the lower end bars, and a reinforcing bar that connects the lower end bar and the upper end bar to form a truss structure,
A rail assembly in which a running reinforced concrete rail for running the construction running body is disposed integrally on top of the upper end reinforcement of the unit rail member. The rail laying surface is a concrete pouring construction surface,
A rail assembly as described in claim 1, characterized in that the rail arrangement spacing and rail arrangement height of the running reinforcement rail are set to dimensions corresponding to the rebar arrangement spacing and rebar arrangement height of the running reinforcement bars at the concrete pouring construction surface. The rail assembly according to claim 1 or 2, characterized in that the unit rail member, the rail width retaining member, and the running reinforcing bar rail are made of reinforcing bars used in pouring concrete.